Dog toy



FIG. 1 is a top plan view of a ball incorporating my new design;

FIG. 2 is a bottom plan view thereof; and,

FIG. 3 is a front elevational view thereof, the left side elevational view, the right side elevational view, and the rear elevational view are identical to FIG. 3. 

The ornamental design for a dog toy, as shown and described. 